Louis Walsh has blasted fellow X Factor judge Simon Cowell as “unprofessional� for storming off after Saturday’s show.

After the main X factor show, Simon Cowell locked himself in his dressing room and refused to appear on X Factor sister show ‘The Xtra Factor’. All because Louis Walsh chose to send Ahsley McKenzie (one of Simon’s acts) home.

Louis said: “It was so unprofessional and childish. He should have been there for Ashley, not sulking like a baby.�

But Simon told TV Biz: “Louis’ behaviour was a joke. His decision was purely spiteful and tactical.

“In the real world he would never have done that. Now the viewers won’t get to see Ashley at his best — all because Louis felt like being spiteful.�